logging more closed loop

[josh1095]

i set my load factors higher today and grabbed another log(too big to post) and it DiD keep me in closed loop longer. i used a straightvalue of 1.40 in the top two brackets and in the tps threshold i put all up to 50%. im still on stock turbo and boost(break in period ) but i think i need to set load factors up to 1.6. im still running very rich under a good amount of boost and load. like 8.9:1!! i can feel and see it kick from closed to open and it immediately robs power. no knock or anything yet so im still ok there. havent messed with timing, just trying to get a good mafcomp value, then compare boost levels and adjust mafcomp even better.
timing is beyond me right now, i know i can get a better tune if i adjust spark timing but i dont much yet. any good tuts on ign timing advance?

 

[ENICKB]

Put your load back to 1.00 and set idle to 14.7 and at WOT 11.1-11.2. Post specifics on ECMTUNING.COM for better luck with fellow dsmlink-ers.

 

[Calan]

I wouldn't go higher than 1.4 on the open loop load values. You have to tune manually at WOT with a WB anyway, so it doesn't make much sense to push closed loop any higher than that.

FWIW - Once the closed loop values are close and trims are steady, I prefer to lock the ECU in open loop and tune off the WB. It avoids the transition anomalies that occur when switching between closed and open loop, allowing for a smoother airflow map in the end.

 

[josh1095]

ok, i had given up hope anyone would help . thanks but i figured it out. sliders are for open loop/wot/higher load factor afr adjustment. im dialed in -13% from 2500 to 6000 and hitting 10.9afrs now! im still stock t25 and boost, breaking in the engine.
calan: i will take your advice and try tuning open loop some time. i can see ## logic cause it is an ubrupt change from closed to open loop at times. now the only thing that gets me is if im in open loop will it constantly reference the sliders? if thats the case id be running rich as hell until i get into boost.
but, then maybe i could adjust my mafcomps to take care of the low load cruis/idle situations?
im not even touching ignition advance yet. ive found the most i get is .4 degrees for less than a second of knockretard. thats not bad right?

 

[Calan]

now the only thing that gets me is if im in open loop will it constantly reference the sliders?

Which sliders are you talking about?

The MAFComp sliders are always referenced throughout the entire operating range; they are used as a calibration to tell the ECU how much air is entering the engine at any given time. The timing sliders are also always in effect, and control ignition advance indexed by RPM.

The fuel sliders add or subtract fuel at certain RPM points, but they are "scaled" based on the throttle position (engine load).

 

[josh1095]

yes i was referring to fuel sliders. well, then it would work just fine. i might mess with that this weekend. thanks

 

[Calan]

The fuel (and timing) sliders are a holdover from previous versions of ECMLink; you really shouldn't need to tune with them in V3.

Zero the fuel sliders, and use the DA table to set up AFR target values (for open loop)...and if your airflow calibration and fuel properties are correct, you should be able to hit those targets. If not, then you need to do some more calibration with global fuel and/or MAFComp. You should also zero all the timing sliders and use the timing DA tables instead.